Self-regulating damper.



PATENT OFFICE BENJAMNV. onor,l or cUNoT, INDIANA.

SELFTBEGULATING pararse.

Specication of LettersPatent.

Patented April 7, 1908;/

Application led January 11, 1907. Serial No. 351,824.

'To all whom it may concer-n:

Be it known that I, BENJAMIN V. Cnor, a citizen of Ithe United States7 residing at Cunot, in the countyof Owen and State of Indiana, have invented certain new and useful Improvements in Self-R egulating Dam- Which the following is a specification.

pers, o .4 Myinvention relates vto 4dampers of the self-regulating type and has for its object the provision of'an instantaneously removable and replaceable damper comprising a cone- I ,shaped diaphragm suspended in the pi e by y'means of hooks secure to the upper ef ge of a vertical section of pipe, .and a cone-sha ed cut-off suspended on one arm of a lever ulcrumed on the edge of a hole or slot in the pipe and extending out .of the pi e and have a counter Weight adj usta ly securedthereto,

4 The construction and advantages of my invention Willl be described in detail hereinafter 4and illustrated in t-he accompanying drawings lin Which- Y Figure 1 is a longitudinal sectional view 'of a fragment of a length of stove pi e showingv my improved damper-in position t erein an in seotlon, Fig. 2, a detail'vie'w in elevation of the cone-sha ed diaphragm, and Fig. 3, a detail view in e evation of the damper.

In the drawings similar reference charac'.- ters indicate corresponding parts through- Out the several views. Aindicates a length of stove i e. f lB indicates a conical-sha e diaphragm suspended from the upper e ge of length A by means'of hooks C riveted or otherwise secured thereto and having an opening D in its ulpper end and other openings E in ,its 1nc ined surface for the passage of smoke and gases. y

F indicates la cylindrical apron or flange.

I extending downwardly from the llower edge.

of thel cone-shaped portion Which serves to cause a closer lit between the diaphragm and v the pipe. l G indicates .the dam er which is conesha ed so as to t snug v the lower surface `of t e diaphra in -B and is longenough to entirely cover t e holes or openin s E therein, when in engagement with the iaphragm,

butdoes not extend t-o--thefull diameter of the pipe so as to leave a space for the passage of smoke around its edge when not in cngage ment with the diaphragm. A

H indicates a hole in the upper endof the damper and I a wire bail secured in the damper across said hole.

J indicates a lever fulcrumed in a hole or Slot K in ipe A the lever being provided with an o set L to seat on the edge of said hole or slot. of the pipe A is bent to Jform an eye M, and N indicates a rod securedin said eye M and to Wire bail I to support the damper G.

0 indicates a Weight adjustably secured to the arm of the lever outside of the pipe A by means of set screw P.

In operation when the amount of heat passing through the pipe A is normal the damper G is in the position shown in F ig. 1 but as the heat increases, causing an increase in the draft, the damper G is raised thereby gradually cutting-off the area of egress of the products of combustion which continuing lwould eventually cut-off the' draft exce t through the' hole H. Then as the heat i* -minishes the pressure against the damper'G decreases and permits it to recede from the diaphragm and the operation is repeated. I have stated that the damper Would be raised so high as to cut-off egress of the prod-v ucts-of combustion except through hole H but when in satisfactory operation the damper will reciprocate but slightly so as to keep the iire at substantially a uniform condition. ItWill be also understood that the The arm of said lever J inside y temperature of the fire mav be regulated by adjustingv the weight O onlever J and if desired that the arm of the lever may be providedjvith a graduate-d scale to assist in posi- -tioning the Weight to secure the temperature desired It will also be understood that as the diav phragm B and its connectionsare readilyr removable from t-he length of stove ipe A the damper may be readily transferredpfroin one stove pipe to another.

Having thus described my invention what Iclaim is*d I In a damper', in combination'with a stove pipe, acone-shaped and perforated diaphragm contained in the pipe, 'said diaphragm being provi-ded with a eentm1openng,a1everfu1 theren, substantially as shown dnd de l crumed on the pipe, and a cone shaped hol E scribed. 10

low damper provided With afoentral opening ln testimony whereof I hereto afx my m ahnement With the opemng 1n the dla- I @gaat-ure 1n the presence of two Wltnesses.

5 hragm, said damper being secured to said BENJAMIN V. CROY.

ever and adapted ,to reciprocate in the pipe "Witmfsses:

into and out of engagement with said dla* JESSE T. HojnN, phragm to close and open .the pertoratlons I MICHAEL T. FLANNERY. 

